Plasmacytoid Urothelial (Transitional Cell) Carcinoma
Supplemental Studies
Immunohistology
- Keratin positive
- CD138 positive
- (CD138 stains many carcinomas)
- MUM1 and kappa/lambda light chain negative
- E cadherin negative
- Conventional and micropapillary are positive
- Signet ring carcinoma is negative also
Histochemistry
- Mucin stains may reveal intracytoplasmic lumens
